The Easiest And Fastest: Roasted Butterflied Turkey

Ingredients

• 3 large onions, roughly chopped
• 3 large carrots, peeled and roughly chopped
• 4 stalks celery, roughly chopped
• 12 thyme sprigs
• 2 tablespoon vegetable oil
• 1 whole turkey, twelve to fourteen pounds, butterflied, backbone, neck, and giblets reserved
• kosher salt and freshly ground black pepper, to taste
• 6 cup homemade or low-sodium canned chicken or turkey stock
• 3 bay leaves
• 3 tablespoon unsalted butter
• 1/4 cup all-purpose flour